US3175814A - Method of and apparatus for preheating vitrifiable batch - Google Patents

Method of and apparatus for preheating vitrifiable batch Download PDF

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Publication number
US3175814A
US3175814A US158796A US15879661A US3175814A US 3175814 A US3175814 A US 3175814A US 158796 A US158796 A US 158796A US 15879661 A US15879661 A US 15879661A US 3175814 A US3175814 A US 3175814A
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US
United States
Prior art keywords
furnace
fumes
sectional area
heat
matter
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US158796A
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English (en)
Inventor
Henry Georges
Deliere Jean
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
AGC Glass Europe SA
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Glaverbel Belgium SA
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Filing date
Publication date
Application filed by Glaverbel Belgium SA filed Critical Glaverbel Belgium SA
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    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B5/00—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture
    • C03B5/12—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture in shaft furnaces
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B3/00—Charging the melting furnaces
    • C03B3/02—Charging the melting furnaces combined with preheating, premelting or pretreating the glass-making ingredients, pellets or cullet
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P40/00—Technologies relating to the processing of minerals
    • Y02P40/50—Glass production, e.g. reusing waste heat during processing or shaping
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P40/00—Technologies relating to the processing of minerals
    • Y02P40/50—Glass production, e.g. reusing waste heat during processing or shaping
    • Y02P40/57—Improving the yield, e-g- reduction of reject rates
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S266/00—Metallurgical apparatus
    • Y10S266/901—Scrap metal preheating or melting

Definitions

  • the present invention relates to a method of and apparatus for the preheating of vitriiiable batch during introduction into glass furnaces, and concerns more especially furnaces in which the material is heated in the course of its descent through a current of hot fumes coming from the melting zone.
  • the invention has for its object to improve the thermal yield of such apparatus.
  • the current of hot fumes leaving the melting zone is divided into a number of partial currents passing between separate radiating surfaces.
  • the current of hot fumes leaving the melting zone is divided into a number of partial currents passing between separate radiating surfaces.
  • the subdivision of the gas current a more complete contact is ensured between each gas current and the radiating surfaces, and the fumes are caused to ow between the large surfaces absorbing an appreciable quantity of their sensible heat.
  • the vitriiiable batch is advantageously distributed between the various partial currents of fumes in accordance with the rate of flow of the latter.
  • rate of supply of materials By proportioning the rate of supply of materials to the rate of flow of hot fumes, an optimum transfer of heat to the solid materials is ensured.
  • an apparatus in which the vitriiable batch is preheated by counter-current circulation of hot fumse emanating from the melting Zone comprises in the path of the fumes elements having a large development of surfaces which are heated by the fumes and radiate towards the grains of vitriable batch.
  • These elements may consist of ceramic material, more particularly of a ceraniic-metal mixture known under the name cermet. They are advantageously made of metal, for example sheet metal, and formed of tubes or chains.
  • the elements of large surface contained in the interior of the furnace are so disposed as to form a number of compartments open at both ends, what is to say, in the direction of travel of the fumes, which compartments may be separated from one another.
  • the current of fumes is divided into a number of partial currents which are more intimately brought into contact with the various exchange surfaces than a single current, in which preferential currents which are badly distributed over the cross-section of the furnace may be setup.
  • the apparatus also comprises a device for the distribution of the vitrifiable batch, so that the latter is distributed among various compartments in accordance with a chosen law.
  • a screen is employed in which the apertures are uniformly distributed over its entire surface.
  • the supply of batch to each compartment is advantageously controlled in proportion with the rate of iiow of fumes in this compartment, utilising a perforated metal plate in which the perforations are distributed in proportion with the rate of ow of the fumes passing through the various compartments.
  • FIGURE l is a diagrammatic vertical section through a furnace provided with an apparatus according to the invention.
  • FIGURES 2 to 4 are horizontal sections along the line II-II of FIGURE 1, showing a number of constructional forms of the apparatus according to the invention;
  • FIGURE 5 is a horizontal sectional view taken along the line 5 5 of FIGURE 1;
  • FIGURE 6 is a vertical sectional view looking along the line 6 6 of FIGURE 3 but showing a further modification of the invention.
  • the furnace denoted as a whole by the reference 1 is composed of an envelope 2 of refractory material forming the crucible 3 at the base and, above the latter, the exchanger column 4.
  • the orifice 5 for the charging of the furnace, provided with a hopper 6.
  • the orifice 7 Situated slightly below the orifice 5 is the orifice 7 through which the fumes emanating from the furnace are sucked and discharged to the stack.
  • the raw materials forming the vitrifable batch are introduced into the furnace 1 through the hopper 6, fall in scattered form into the column 4 and collect in the crucible 3 where they are heated by burners as indicated in FIG. 1 to form a mass of molten glass 8.
  • Combustion gases are injected into the glass mass, which they heat, wherafter the gases rise through the column 4, thus heating the grains of batch, and escape through the orifice 7 to the stack.
  • metallic elements 10 are disposed in the upper part 9 of the column 4. These elements may be of any shape and may be formed, for example, of chains or metal strips. Preferably, continuous elements are employed which form compartments or channels 11 open at their upper and lower ends,
  • the elements are sheet-metal elements forming a chequerwork defining channels 11.
  • the sheet-metal elements divide the cross-section of the zone 9 into different sectors, of which there are eight in the illustrated arrangement.
  • FIGURE 4 illustrates a partitioning formed of metal tubes 12. The passages 11 correspond to the interior of the tubes and the passages 11' to the intervals between the tubes.
  • the metallic elements are composed of intersecting transverse bars 10 dividing the cross-section of the zone 9 into sectors in the manner of the sheet metal elements illustrated in FIGURE 3 of the drawings, and a plurality of chains 10 depending from each of such transverse bars 10; the bars 10 and chains 10 forming sector-like channels such as the channels 11 illustrated in FIG. 3.
  • the elements 10 are disposed in the column 4 below the orifice 7 for the discharge of the fumes and descend therein as far as is possible and compatible with their resistance to high temperature.
  • the vitriable batch introduced into the furnace through the hopper 6 falls onto a perforated plate or screen 13 encased in a frame 14 resiliently supported by springs 15 to the envelope 2 of the furnace.
  • the plate or screen 13 is vibrated by means not shown.
  • the introducted batch spreads over the screen 13 which distributes it over the entire crosssection of the furnace. This distribution may be uniform or, if a perforated plate is provided, as is shown by the plate 13 in FIG. 5, it may be adjusted in accordance with an arbitrarily chosen law.
  • each channel 11 will be fed with a quantity of batch proportional to the rate of flow of flumes in the said channel. This is effected by perforating the plate 13 with a number of holes 13" proportional to the rate of ow of fumes.
  • a glass melting furnace comprising a vertically disposed tubular furnace having at the bottom thereof a Crucible in which the vitrifiable matter is melted with the emanation of hot fumes therefrom, and having a chamber rising directly up from the level of the molten bath of vitrifiable matter in said Crucible and extending over the area of said tubular furnace, said hot fumes rising freely, vertically and s-traightly from such molten bath up through such chamber and toward the upper end of said tubular furnace to be discharged at the upper end of the latter, perheating means located within said furnace in given spaced relation above said bath of molten materials and in the path of flow of said hot fumes, said preheating means being directly connected to the upper end of said chamber and being composed of a plurality of heat exchange elements of large surface area and constituted of material which is capable of readily absorbing heat from said hot fumes and transmitting such absorbed heat by radiation to the vitriable matter to be melted, said heat exchange elements of said preheating means subdividing the
  • a glass furnace such as defined in claim 3, in whichA 5 6 tically disposed relation in said sectional area and ar- 2,658,743 11/53 Speil et a1. 263-10 ranged to form said vertically disposed continuous pas- 2,668,041 2/54 Knibbs 263-30 X sages. 2,722,733 11/55 Meyer et a1. 165-179 X 2,731,709 1/56 Gaddis et a1 165-179 X References Cited by the Examiner 5 2,958,151 11/60 Palmer 263-29 X UNITED STATES PATENTS j 538,225 4/95 Williamson u 263-30 X CHARLES SUIxALO, Plzmmy Examzner. 733,903 2/05 Skoog 263 30 PERCY L. PATRICK, Examiner. 2,470,543 5/49 Azbe 263-29

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Glass Melting And Manufacturing (AREA)
  • Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
  • Furnace Details (AREA)
  • Polymers With Sulfur, Phosphorus Or Metals In The Main Chain (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
US158796A 1960-12-16 1961-12-12 Method of and apparatus for preheating vitrifiable batch Expired - Lifetime US3175814A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BE475809 1960-12-16

Publications (1)

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US3175814A true US3175814A (en) 1965-03-30

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US158796A Expired - Lifetime US3175814A (en) 1960-12-16 1961-12-12 Method of and apparatus for preheating vitrifiable batch

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US (1) US3175814A (enrdf_load_html_response)
CH (1) CH377055A (enrdf_load_html_response)
DE (1) DE1203429B (enrdf_load_html_response)
ES (2) ES272951A1 (enrdf_load_html_response)
GB (1) GB973115A (enrdf_load_html_response)
NL (2) NL133202C (enrdf_load_html_response)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2873682A1 (fr) * 2004-07-29 2006-02-03 Saint Gobain Isover Sa Procede et dispositif de traitement de dechets fibreux en vue de leur recyclage

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1173650A (en) * 1980-09-02 1984-09-04 Frederick J. Nelson Method and apparatus for preheating pulverous materials prior to their introduction into a melting furnace

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US538225A (en) * 1895-04-23 Process of manufacturing pig-iron
US783903A (en) * 1904-07-11 1905-02-28 August Skoog Ore-furnace.
US2470543A (en) * 1946-10-24 1949-05-17 Azbe Corp Calcining apparatus
US2658743A (en) * 1949-10-21 1953-11-10 Johns Manville Melting furnace
US2668041A (en) * 1949-04-12 1954-02-02 Knibbs Norman Victor Syndney Heat treatment of finely divided solids
US2722733A (en) * 1950-11-08 1955-11-08 Cleaver Brooks Co Method of making heat exchanger tube
US2731709A (en) * 1950-09-18 1956-01-24 Brown Fintube Co Method of making internally finned heat exchanger tubes
US2958161A (en) * 1957-08-13 1960-11-01 Delos M Palmer Method of melting glass

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE561020A (enrdf_load_html_response) 1957-09-21
FR1256831A (fr) * 1959-05-12 1961-03-24 Union Des Verreries Mecaniques Procédé et dispositif pour améliorer le préchauffage, l'enfournement et la fusion de matières pulvérulentes dans les fours de fusion

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US538225A (en) * 1895-04-23 Process of manufacturing pig-iron
US783903A (en) * 1904-07-11 1905-02-28 August Skoog Ore-furnace.
US2470543A (en) * 1946-10-24 1949-05-17 Azbe Corp Calcining apparatus
US2668041A (en) * 1949-04-12 1954-02-02 Knibbs Norman Victor Syndney Heat treatment of finely divided solids
US2658743A (en) * 1949-10-21 1953-11-10 Johns Manville Melting furnace
US2731709A (en) * 1950-09-18 1956-01-24 Brown Fintube Co Method of making internally finned heat exchanger tubes
US2722733A (en) * 1950-11-08 1955-11-08 Cleaver Brooks Co Method of making heat exchanger tube
US2958161A (en) * 1957-08-13 1960-11-01 Delos M Palmer Method of melting glass

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2873682A1 (fr) * 2004-07-29 2006-02-03 Saint Gobain Isover Sa Procede et dispositif de traitement de dechets fibreux en vue de leur recyclage
WO2006018582A1 (fr) * 2004-07-29 2006-02-23 Saint-Gobain Isover Procede et dispositif de traitement de dechets fibreux en vue de leur recyclage
US20080256981A1 (en) * 2004-07-29 2008-10-23 Saint-Gobain Isover Method and Device for Treating Fibrous Wastes for Recycling

Also Published As

Publication number Publication date
NL272218A (enrdf_load_html_response) 1900-01-01
ES272951A1 (es) 1962-03-01
DE1203429B (de) 1965-10-21
CH377055A (fr) 1964-04-30
ES273565A1 (es) 1962-03-16
NL133202C (enrdf_load_html_response) 1900-01-01
GB973115A (en) 1964-10-21

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